Hi guys. I have been using my 30 note music box for quite a while and I like it a lot, but recently I've noticed there is a small problem with the cogs. They sometimes struggle to pull think paper sheets and sort of slip. I think they have started to wear. Do you happen to know any place where I can order replacement parts for DIY music boxes? I'm considering to order a cheap music box of the same kind as I have and use it for spare parts.